Dizings2k

All,

I have an issue with my ride height. I bought my car with these Bilstein pss9 coilovers already installed on it, but I wanted to raise the ride height a bit. Today I adjusted the F and R height, front came out even both sides no issues. The rear however...

The rear passenger side is sitting 1/2 inch higher than the drivers and I can't seem to get them even. The problem is, the passenger side coilover is adjusted almost all the way down (low) and the driver side is adjusted almost max high.... yet the passenger continues to sit higher. See pics below for reference!

I tried loosening the bottom bolt holding the coilover to the control arm, setting the car down on the ground and tightening it back up, no dice. I am sure to bounce the suspension every time I make an adjustment to settle it a bit, no difference.

Some things to consider:
- I did not install these myself, but the installation looks identical on each, top and bottom.
- The car has 150k miles on it, clean title, no accidents, all matching VIN panels.
- These coilovers have about 70-80k miles on them, but ride well and adjust compression properly.
- I verified the coilover, springs and helper springs all have matching part numbers on them.
- I just had a 4 wheel alignment done a month ago. All is in spec and adjusted properly.

I've noticed since I bought the car the rear has always felt unsettled, now I know why!

What else can I try?!?!? Is the passenger rear shock worn out or something?


Pics for reference:

CYANiDE91

That's a lot of miles on coilovers. Most likely they are in need of being rebuilt. The easy test is to take both of the coils out, take the dampers apart and manually compress them to see if compression and rebound is similar. I'd suspect that one of the dampers is bad.

B serious

Can u try moving them from 1 side of the car to the other?

Dizings2k

Good idea, I'll try swapping sides and see what happens.

Question is... Do I spend the $1100 to get these rebuilt or just get new ohlins? Decisions!

noodels

broken spring ?

GSteg

Isn't a brand new set of PSS9 $1400? I would rather go with all brand new parts unless you're looking to have your current set valved differently and don't mind the turnaround time.

I would measure the spring length to make sure they're not sagging.

ZDan

Dunno what else is going on, but in pic 1 the helper spring isn't fully squished, there's a big gap in the middle...

_valtsu_

Uneven garage floor can easily do this. When I got new coilovers I had the same problem at front and it was just the garage floor.

GSteg

They're single height adjustment coilovers. You can't set preload independently from ride height.

Car Analogy

What about bushing bind? Are you clocking the bushings each time you make a change to ride height?

Try loosening all the rear control arm bolts. Both upper, both lower, and the lower shock mounts, to allow the rubber bushings to unwind and stop trying to force the car to a certain ride height.